Why are blood cells so far apart, while skin cells are grouped closely together

The procces of farming organism from the sea is ?

Describe the response the kidneys have to dehydration and excessive water intake. what happens to the concentration of urine in each case ?

Match the following terms and definitions. 1. species that are adapted to live in equilibrium at carrying capacity population density 2. population growth that reaches equilibrium and carrying capacity population 3. death rate mortality 4. birth rate k-selected 5. a group of interacting individuals of the same species within the same geographic area natality 6. the number of organisms living in a particular area logistic growth